Air-strainer attachment for carbureters.



A. 0. CRAVEN.

30 I 91 T- v Patented Dec. 25, 1917.

A. 0. nal g ATTORNEY AIR STRAFNER ATTACHMENT FOR CARBURETERS.

APPLICATION FILED IAN. 1,251,342.

WITNESSES $44K UNITED STATES PATENT onnion.

AUSTIN 0. CRAVEN, 0F COLFAX, LOUISIANA.

AIR-STRAINER ATTACHMENT FOR CARBURETERS.

Application filed. January 30, 1917.

To all whom it may concern:

Be it known that I, AUSTIN O. CRAVEN,

a citizen of the United States, residing at Colfax, in theparish'ofGrant and State of Louisiana, have invented new and usefulImprovements in Air-Strainer Attachments for Carbureters, of which thefollowing is a specification.

This invention relates to attachments adapted to be applied tocarbureters to strain the air which is admitted to the same whereby dustis prevented from entering the carbureter and the engine to which it isattached.

The parts of the device are so arranged that it may be used forintroducing gas into the engine for the purpose of starting the same andhence the attachment may be used as an engine starter in addition to thefunctions which it performs as an air strainer.

With these objects in view the attachment comprises a cylindrical bodyhaving at one end a nipple adapted to be inserted in the air intake endof the carbureter casing. A screen is located 'in the said body and acap is detachably mounted at one end and is provided at its centralportion with a screen. A filtering material as for instance cotton fiberis located in the body between the screens and a funnel is mounted uponthe top side of the body and the said body is provided at the lower endof the funnel with openings through which gasolene may be passed intothe body and the filtering material.

In the accompanying drawing Figure 1 is a perspective view of the carbureter showing the attachment applied;

F i 2 is a vertical sectional view of the attac ment; M r

Fig. 3 is a transverse sectional view of the same;

Fig. 4 is a fragmentary side elevation of a part of the same.

As illustrated in the accompanying drawing, the carbureter 1 may be ofany usual pattern and is provided with an air intake sleeve 2. Theattachment comprises a cylindrical body 3 of sheet metal having at oneend a tubular nipple 4 adapted to be inserted in the sleeve 2 andadapted to frictionally engage the same. A screen 5 is located in thebody 3 at a point between the ends thereof and is disposed transverselyacross the said body. A cap 6 is adapted to slip on'that end of the body3 opposite Specification of Letters Patent.

Patented Dec. 25, 1917.

Serial No. 145,558.

the end at which the nipple 4 is located and the said cap is open at itscenter and the said opening is provided with a screen 7. Filteringmaterial 8 as for instance cotton fiber is located in the body 3 betweenthe screens 5 and 7. A funnel 9 is mounted upon the top side of the body3 and openings 10 are provided in the top portion of the said body 3 andcommunicate at their upper ends with the lower end of the funnel 9. Thesaid openings 10 are located at the opposite sides of a vertical planewhich passesthrough the centers of the body 3.

When the attachment is applied to the carbureter and as the air is drawninto the carbureter it passes first through the screen 7 and thenthrough the filtering material 8 and then through the screen 5 andthenipple 4 into the carbureter. As the air passes through the saidmaterial 8 it is relieved of dust or foreign matter and hence theattachment prevents the dust from entering the carbureter and the engineto which it is attached and prevents the damage which is due to theadmission of dust to these parts.

When it is desired to start the engine gasolene or oil may be pouredinto the funnel 9 and the said liquid will pass through the openings 10into the filtering material 8 and consequently as the air is drawnthrough the said filtering material it is carbureted and may be used toadvantage for starting the engine. By reason of the fact that theopenings 10 are located at the opposite sides of the plane which passesvertically through the center of the body 3 the liquid which is pouredinto the funnel 9 is distributed at the opposite sides of the said planein the filtering material 8 and consequently as the air passes throughthe said filtering material it is efi'ectually saturated and enters thecarbureter in the form of a mixture or gas and from the carbureterpasses into the engine where it is exploded in the usual manner when theengine is started.

From the foregoing description taken in conjunction with theaccompanying drawing it will be seen that an attachment for a carbureterof simple and durable form is provided and that the same may be used toadvantage for removing particles of dust and other foreign matter fromthe air which enters the carbureter and may also be used to advantagefor carbureting the air which is admitted into the carbureter and theengine cylinder at thetime. that the operation of the engine is begun.

Having described the invention what is claimed is 1. A-carbureterattachment comprising a body having at one end a nipple adapted to beinserted in the air intake of the carbureter, a screen located in thebody at a point between the ends thereof, a cap detachably mounted uponthe body and provided at its center with an opening, a screen locatedover thevopening of the cap, filtering material located in the bodybetween the said screens, a funnel mounted upon the body, the said bodyhaving openings which communicate with the interior of the said funnel.

2. A carbureter attachment comprising a body having nipples adapted tobe inserted in the air intake of the carbureter, a screen located in thebody at a point between the ends thereof, a cap detachably mounted uponthe body and provided with an opening located at its center, a screenlocated over the opening of the cap, filtering material located in thebody between the said screens, a funnel mounted upon the body, said bodybeing provided with openings which communicate at their upper ends withthe interior of the funnel, the said openings being located at theopposite sides of a vertical plane which passes through the center ofthe body.

In testimony whereof I afiix my signature.

AUSTIN O. CRAVEN.

